1. (noun) one of the twelve Apostles (first century)

• simon the canaanite
• simon the zealot
• simon zelotes
• st. simon

2. (noun) United States singer and songwriter (born in 1942)

• paul simon

3. (noun) United States playwright noted for light comedies (born in 1927)

• marvin neil simon
• neil simon

4. (noun) United States economist and psychologist who pioneered in the development of cognitive science (1916-2001)

• herb simon
• herbert a. simon
• herbert alexander simon